; born in Fairfax county, Va.
, Aug. 18, 1824; graduated at West Point
in 1845, entering the dragoons.
in 1846, he was in the principal battles of the war with Mexico
He was also active in New Mexico
, afterwards, against the Indians.
In 1861 he was made major of cavalry, and early in 1862 brigadiergeneral of volunteers, commanding a brigade in the Army of the Potomac.
After serving in the campaign on the Peninsula
, he was transferred (August, 1862) to the Department of the Mississippi, and cooperated with General Steele
in the capture of Little Rock, Ark.
He was brevetted major-general of volunteers in March, 1865; promoted to lieutenant-colonel, 10th Cavalry, in 1866; was Professor
of Military Science in Kansas Agricultural College in 1868-71; promoted to colonel, 2d Cavalry, in 1879.
He died in St. Paul, Minn.
, June 26, 1881.